{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCT5211SR2M","brand":"onsemi","brandSlug":"onsemi","productSlug":"MCT5211SR2M","canonicalUrl":"https://icboms.com/onsemi/MCT5211SR2M","factsUrl":"https://icboms.com/api/mcp/products/MCT5211SR2M","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MCT5211SR2M optoisolator, DC input, transistor with base output, 1 channel, 4170 Vrms isolation, 150 mA output, 6-SMD Gull Wing package.","salesMarkdown":"## Isolation and drive for PLC digital inputs The MCT5211SR2M: Rated for 4170 Vrms isolation, it safely separates a 24 V PLC input stage from the field-side sensor or switch — enough margin for industrial control panels where transient immunity matters. Typical turn-on time of 14 µs and turn-off of 2.5 µs place it in the right range for 24 VDC PLC input modules with hardware debounce — the output settles well within a typical 3 ms filter window. ## Output headroom and package rework The output transistor handles up to 150 mA continuous and saturates at 400 mV max — enough to drive a small relay or a logic-level input without a secondary transistor stage. The 6-SMD Gull Wing package has exposed leads that are easy to inspect and touch up under a hot-air station. The 1.25 V typical forward drop means the LED side runs cool at 1.6 mA, so the part doesn't cook itself during rework. Operating from -40°C to 100°C covers most indoor and outdoor control cabinet environments — no need for a wider temp grade unless the board sits next to a motor drive heatsink.","metaTitle":"onsemi MCT5211SR2M Optoisolator, 4170 Vrms, 6-SMD Gull Wing","metaDescription":"onsemi MCT5211SR2M optoisolator: 4170 Vrms isolation, 150% CTR min at 1.6 mA, 150 mA output, 6-SMD Gull Wing. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Surface Mount","Package / Case":"6-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"4170Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-40°C ~ 100°C","Voltage - Output (Max)":"30V","Supplier Device Package":"6-SMD","Current - Output / Channel":"150mA","Current Transfer Ratio (Min)":"150% @ 1.6mA","Voltage - Forward (Vf) (Typ)":"1.25V","Turn On / Turn Off Time (Typ)":"14µs, 2.5µs","Current - DC Forward (If) (Max)":"50 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.66","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.66000","currency":"USD"},{"qty":10,"price":"$1.04900","currency":"USD"},{"qty":100,"price":"$0.77600","currency":"USD"},{"qty":500,"price":"$0.71308","currency":"USD"},{"qty":1000,"price":"$0.58723","currency":"USD"},{"qty":2000,"price":"$0.55787","currency":"USD"},{"qty":5000,"price":"$0.54529","currency":"USD"},{"qty":10000,"price":"$0.53271","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/79fd3b596438bdd4ee9aa708420cea90.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is MCT5211SR2M a drop-in replacement for 4N25SR2M?","answer":"Both are single-channel DC-input optoisolators in a 6-SMD Gull Wing package with transistor-with-base output, but the MCT5211SR2M has a lower Vce saturation (400 mV vs 500 mV) and a different CTR spec. The pinout is the same, so it will fit the same PCB footprint, but verify the minimum CTR at your drive current — the 4N25SR2M has a 2 µs turn-on time versus 14 µs for this part, which may matter in faster-switching applications."},{"question":"What compliance documentation does onsemi provide for MCT5211SR2M?","answer":"The part is ROHS3 compliant. onsemi provides the standard datasheet and RoHS certificate of compliance. No AEC-Q or UL documentation is listed in the available records."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MCT5211SR2M","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MCT5211SR2M when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}